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Hall A Update. Thia Keppel 6/4/13. Near term accelerator schedule – same as last meeting. Accelerator Run II: Beam in hall 3/2014, or maybe as early as 1/2014 (?) > 1.1 GeV /pass, 3 pass spin-up to Hall A up to 5.5 pass to D by ~5/14 Shut down 5/3/14

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thia keppel 6 4 13

Hall A Update

Thia Keppel

6/4/13

near term accelerator schedule same as last meeting
Near term accelerator schedule – same as last meeting
  • Accelerator Run II: Beam in hall 3/2014, or maybe as early as 1/2014 (?)
    • > 1.1 GeV/pass, 3 pass spin-up to Hall A
    • up to 5.5 pass to D by ~5/14
    • Shut down 5/3/14
  • Accelerator Run III: 8/30/14 – 12/1/14
    • CD4A milestones
      • 12 GeV 5.5 pass capable installed
      • 11 GeV 5 pass to A, B, C installed
      • > 2 nA 2.2 GeV single pass transported
    • Plan
      • E > 2 GeV/pass, 10 GeV to Hall D
      • 2 Hall operation
  • Accelerator Run IV: 2/13/15 – 6/1/15
    • E > 2 GeV/pass, 2 hall operation
    • CD4B Halls B,C,D operational, > 6, 6, 10 GeV
      • Schedule rebaseline likely – won’t effect Hall A or accelerator
  • Physics Run I: 8/30/15 – 12/23/15
    • E > 2 GeV/pass
  • Physics Run II: 2/6/16 – 6/25/16
  • Physics Run III: 9/12/16 – 12/22/16
  • Spring, fall, spring, fall runs continue….

Rebaselining might carry some changes, but unlikely to effect SBS

hall a projected experiment schedule as of 8 2012 available on hall a wiki
Hall A Projected Experiment Schedule as of 8/2012 - available on Hall A wiki

Run Period

2014

2015

2016

SBS

Experiments in parentheses represent potential schedule changes.

MOLLER, SOLID…?....

general hall near term thoughts for sbs
General Hall near term thoughts for SBS
  • Hall A should see first beam in less than ~1 year 
    • Upgrade and infrastructure work underway
      • Beamline– energy, current, position, polarimetry,…
      • HRS’s – detector upgrades and general refurbishing
      • Many things to do and help appreciated!
  • Experiments using ~standard equipment scheduled initially
    • Allows for parallel efforts preparing for new equipment (3He target, PREX, SBS,….MOLLER,….)
sbs current activities
SBS Current Activities
  • Hall A currently supporting “pre-R&D” and SBS-related work
    • 3He target development (Gordon Cates)
    • GEM tracker prototyping at UVA (NilangaLiyanage)
    • Hadron calorimeter (Gregg Franklin) Fermilabscintillator purchase approved
  • 10/1/12 SBS “Program” started with DOE
    • Subset of the proposed physics program (magnet and GEMs)
sbs design and engineering see robin s talk
SBS Design and Engineering (See Robin’s talk!)

GEn

  • Yoke modification drawings ~30% complete
  • Design work ongoing for magnet counter weight support, will incorporate movement of support to relocate magnet
  • Design details of rollers, jack mounts, magnet bracket, floor plates ongoing, ~65% complete
  • Detailed drawings of new coils ~25%
  • Power supply specification completed, in procurement
  • Layout and design of shielded beampipe and vacuum snout~20%
  • Defining field clamps and design of clamp supports ~15%
  • Detector support design ~20%
  • Mid-June delivery expected for magnet from BNL

GMn

other thoughts
Other Thoughts
  • New PAC procedures for no-additional-beamtime-needed requests
    • Does the SBS collaboration anticipate experiments like this?
    • If so, suggest working on a process for review